编程向pyruvate代谢疗法扩大单原子纳米酶激活的pyroptosis用于免疫疗法
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 5, 2024
概括
这项研究引入了一种新的纳米酶,它触发了 pyroptosis,并重塑了瘤微环境. 这种方法通过提高瘤细胞免疫性和向代谢途径来增强抗瘤免疫疗法.
科学领域:
- 生物医学工程 生物医学工程
- 免疫治疗是一种免疫疗法.
- 纳米技术纳米技术
背景情况:
- 提高细胞免疫性和修改瘤微环境 (TME) 对于有效的抗瘤免疫疗法至关重要.
- 目前的策略经常面临克服TME免疫抑制性质的挑战.
研究的目的:
- 开发一种新型的单原子纳米酶,能够启动热和重塑TME.
- 为了研究UK5099的协同效应,酸氧化酶 (POx) 和一个S-doped铜单原子纳米酶 (Cu-NS SA) 的增强抗瘤免疫疗法.
主要方法:
- 将UK5099和POx同时加载到一个Cu-NS单原子纳米酶上 (Cu-NS@UK@POx).
- 使用S-doped不对称的Cu-NS SA与增强的氧化酶活动 (POD,NOx,LCO,GSHOx) 来产生活性氧物种 (ROS).
- 通过Cu-NS SA,UK5099和POx.的协同作用来准pyruvate代谢.
主要成果:
- 与Cu-N4 SA相比,S-doped Cu-NS SA表现出明显增强的氧化酶活动,导致ROS风暴引发热.
- 联合疗法有效地准了pyruvate代谢,改善了免疫TME,并增加了pyroptosis.
- 该纳米酶展示了通过ROS,代谢调节和热致死诱导激活抗瘤免疫治疗的双方向策略.
结论:
- 开发的Cu-NS@UK@POx纳米酶为激活抗瘤免疫治疗提供了一个有希望的策略.
- 这种方法有效地触发了热致死,并通过向代谢途径来重塑免疫抑制的TME.
- 该研究为扩大抗瘤免疫疗法应用提供了一个新的平台.
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